Zeiss Humphrey II-i series, User Manual

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Troubleshooting
Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
M-4
Printout does not include all eligible tests for a
patient when printing Overview or Guided
Progression Analysis (GPA) printout • Some test parameters not valid for STATPAC ( 7-2 ) or GPA.

• Patient name or date of birth incorrect on some tests ( 3-8 , 10-14 ).

• Search via recall patient data - fix with Merge Patients feature ( 3-14 , 10-12 ).

• Sixteen (16) test maximum for Overview and GPA printouts ( 7-8 , 8-3 ).
Blind Spot Monitor
Cannot change Blind Spot size • HFA II-
i
uses same stimulus size for testing and Blind Spot check ( 4-8 ).
Cannot locate blind spot • Realign patient ( 3-26 ).

• Verify that proper eye is being tested ( 5-17 ).

• Check to make sure the patient’s non-testing eye is occluded ( 5-17 ).

• Make sure patient is not looking around but fixating on fixation light ( 5-17 ).

• Select FIXATION button and then press RE-TRY TO FIND BLIND SPOT ( 5-12 ).
Blind Spot alarm beep keeps sounding • Same as “Cannot find blind spot” above.

• Blind Spot may be turned off during test by pressing FIXATION ( 5-11 ).
Gaze Tracking
Gaze Tracking will not initialize • HFA not Model 740
i
, 745
i
, or 750
i
.

• High power trial lens being used ( 5-13 ).

• Droopy eyelid - ask patient to open eye wider during initialization ( 5-13 ).

• Interfering eyelashes - ask patient to open eye wider during initialization.

• Small pupils ( 5-13 ).

• Excessive eye movement or blinking ( 5-13 ).

• Excessively large or dilated pupils ( 5-13 ).

• Dry eyes, cloudy media or dark iris ( 5-13 ).

• Deep-set eyes ( 5-13 ).
Head Tracking
Head Tracking does not work • HFA not Model 750
i
.

• Head Tracking not turned on ( 2-14 ).

• Trial lens holder not in Up position ( 5-5 ).

• Gaze Tracking was not initialized at the start of the test ( 5-4 ).
Head Tracking alarm activates too often • Patient’s chin not moving with the chin rest - re-instruct patient ( 5-5 ).

• Reset Head Tracking ( 5-5 ).

• Turn off Head Tracking - press TURN OFF HEAD TRACKING ( 5-12 ).
Table M.1 Troubleshooting Table
Problem Possible Cause or Solution